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https://www.readbyqxmd.com/read/28420038/retrospective-evaluation-of-coyote-attacks-in-dogs-154-cases-1997-2012
#1
Virginia M Frauenthal, Philip Bergman, Robert J Murtaugh
OBJECTIVE: To describe the clinical presentation and outcome of known attacks in client-owned dogs caused by the common coyote, Canis latrans. DESIGN: Retrospective observational study. SETTING: Private referral hospital. ANIMALS: One hundred fifty-four client-owned dogs known to be attacked by coyotes. INTERVENTIONS: None. MEASUREMENTS AND MAIN RESULTS: Records from a private referral hospital from May 1997 through December 2012 were reviewed...
April 18, 2017: Journal of Veterinary Emergency and Critical Care
https://www.readbyqxmd.com/read/28410591/eurasian-golden-jackal-as-host-of-canine-vector-borne-protists
#2
Barbora Mitková, Kristýna Hrazdilová, Gianluca D'Amico, Georg Gerhard Duscher, Franz Suchentrunk, Pavel Forejtek, Călin Mircea Gherman, Ioana Adriana Matei, Angela Monica Ionică, Aikaterini Alexandra Daskalaki, Andrei Daniel Mihalca, Jan Votýpka, Pavel Hulva, David Modrý
BACKGROUND: Jackals are medium-sized canids from the wolf-like clade, exhibiting a unique combination of ancestral morphotypes, broad trophic niches, and close phylogenetic relationships with the wolf and dog. Thus, they represent a potential host of several pathogens with diverse transmission routes. Recently, populations of the Eurasian golden jackal Canis aureus have expanded into the Western Palaearctic, including most of Europe. The aim of our study was to examine Eurasian golden jackals from Romania, Czech Republic and Austria for a wide spectrum of vector-borne protists and to evaluate the role of this species as a reservoir of disease for domestic dogs and/or humans...
April 14, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28369822/improving-the-assessment-of-predator-functional-responses-by-considering-alternate-prey-and-predator-interactions
#3
K Chan, S Boutin, T J Hossie, C J Krebs, M O'Donoghue, D L Murray
To improve understanding of the complex and variable patterns of predator foraging behavior in natural systems, it is critical to determine how density-dependent predation and predator hunting success are mediated by alternate prey or predator interference. Despite considerable theory and debate seeking to place predator-prey interactions in a more realistic context, few empirical studies have quantified the role of alternate prey or intraspecific interactions on predator-prey dynamics. We assessed functional responses of 2 similarly-sized, sympatric carnivores, lynx (Lynx canadensis) and coyotes (Canis latrans), foraging on common primary (snowshoe hares; Lepus americanus) and alternate (red squirrels; Tamiasciurus hudsonicus) prey in a natural system...
March 29, 2017: Ecology
https://www.readbyqxmd.com/read/28369133/isotopic-ecology-of-coyotes-from-scat-and-road-kill-carcasses-a-complementary-approach-to-feeding-experiments
#4
Rachel E B Reid, Paul L Koch
Scat is frequently used to study animal diets because it is easy to find and collect, but one concern is that gross fecal analysis (GFA) techniques exaggerate the importance of small-bodied prey to mammalian mesopredator diets. To capitalize on the benefits of scat, we suggest the analysis of scat carbon and nitrogen isotope values (δ13C and δ15N). This technique offers researchers a non-invasive method to gather short-term dietary information. We conducted three interrelated studies to validate the use of isotopic values from coyote scat: 1) we determined tissue-to-tissue apparent C and N isotope enrichment factors (ε13* and ε15*) for coyotes from road kill animals (n = 4); 2) we derived diet-to-scat isotope discrimination factors for coyotes; and 3) we used field collected coyote scats (n = 12) to compare estimates of coyote dietary proportions from stable isotope mixing models with estimates from two GFA techniques...
2017: PloS One
https://www.readbyqxmd.com/read/28365457/the-history-of-rabies-in-the-western-hemisphere
#5
REVIEW
Andres Velasco-Villa, Matthew R Mauldin, Mang Shi, Luis E Escobar, Nadia F Gallardo-Romero, Inger Damon, Victoria A Olson, Daniel G Streicker, Ginny Emerson
Before the introduction of control programs in the 20th century, rabies in domestic dogs occurred throughout the Western Hemisphere. However, historical records and phylogenetic analysis of multiple virus isolates indicate that, before the arrival of the first European colonizers, rabies virus was likely present only in bats and skunks. Canine rabies was either rare or absent among domestic dogs of Native Americans, and first arrived when many new dog breeds were imported during the period of European colonization...
March 29, 2017: Antiviral Research
https://www.readbyqxmd.com/read/28358635/prevalence-of-alaria-infection-in-companion-animals-in-north-central-oklahoma-from-2006-through-2015-and-detection-in-wildlife
#6
Eileen M Johnson, Yoko Nagamori, Rebecca A Duncan-Decocq, Patrick N Whitley, Akhilesh Ramachandran, Mason V Reichard
OBJECTIVE To determine the prevalence of Alaria infection in cats and dogs in north central Oklahoma over various periods and investigate whether wild animal species in this region were also infected. DESIGN Combined cross-sectional study and case series. SAMPLE Results of parasitological testing of fecal samples from 5,417 client-owned dogs and 1,246 client-owned cats (2006 through 2014); fecal samples from 837 shelter or rescue dogs and 331 shelter or rescue cats (2013 and 2014) and 268 feral cats (2015); tongue or jowl samples from cadavers of 43 wild pigs, 3 opossums, and 1 raccoon; and intestinal tract segments from cadavers of 48 cats and 5 coyotes...
April 15, 2017: Journal of the American Veterinary Medical Association
https://www.readbyqxmd.com/read/28301480/management-and-modeling-approaches-for-controlling-raccoon-rabies-the-road-to-elimination
#7
REVIEW
Stacey A Elmore, Richard B Chipman, Dennis Slate, Kathryn P Huyvaert, Kurt C VerCauteren, Amy T Gilbert
Rabies is an ancient viral disease that significantly impacts human and animal health throughout the world. In the developing parts of the world, dog bites represent the highest risk of rabies infection to people, livestock, and other animals. However, in North America, where several rabies virus variants currently circulate in wildlife, human contact with the raccoon rabies variant leads to the highest per capita population administration of post-exposure prophylaxis (PEP) annually. Previous rabies variant elimination in raccoons (Canada), foxes (Europe), and dogs and coyotes (United States) demonstrates that elimination of the raccoon variant from the eastern US is feasible, given an understanding of rabies control costs and benefits and the availability of proper tools...
March 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28295537/investigation-of-techniques-to-measure-cortisol-and-testosterone-concentrations-in-coyote-hair
#8
Christopher J Schell, Julie K Young, Elizabeth V Lonsdorf, Jill M Mateo, Rachel M Santymire
Long-term noninvasive sampling for endangered or elusive species is particularly difficult due to the challenge of collecting fecal samples before hormone metabolite desiccation, as well as the difficulty in collecting a large enough sample size from all individuals. Hair samples may provide an environmentally stable alternative that provides a long-term assessment of stress and reproductive hormone profiles for captive, zoo, and wild mammals. Here, we extracted and analyzed both cortisol and testosterone in coyote (Canis latrans) hair for the first time...
March 10, 2017: Zoo Biology
https://www.readbyqxmd.com/read/28182234/ancestry-specific-methylation-patterns-in-admixed-offspring-from-an-experimental-coyote-and-gray-wolf-cross
#9
Bridgett vonHoldt, Elizabeth Heppenheimer, Vladimir Petrenko, Paula Croonquist, Linda Y Rutledge
No abstract text is available yet for this article.
February 9, 2017: Journal of Heredity
https://www.readbyqxmd.com/read/28135133/use-of-remote-cameras-to-monitor-the-potential-prevalence-of-sarcoptic-mange-in-southern-texas-usa
#10
Kyle Brewster, Scott E Henke, Clay Hilton, Alfonso Ortega-S
Sarcoptic mange, caused by the mite Sarcoptes scabiei , is a common, highly contagious skin disease that has been reported from more than 100 species of mammals, including humans. Our objectives were to 1) determine the prevalence of sarcoptic mange within mammals from southern Texas, and 2) determine the efficacy of using remote cameras to estimate mange prevalence. We collected remote camera photographs from a 64-km(2) area and blood and skin scrapings from 166 mammals representing 12 species in southern Texas, US during 2012-13...
April 2017: Journal of Wildlife Diseases
https://www.readbyqxmd.com/read/28090753/inferring-infection-hazard-in-wildlife-populations-by-linking-data-across-individual-and-population-scales
#11
Kim M Pepin, Shannon L Kay, Ben D Golas, Susan S Shriner, Amy T Gilbert, Ryan S Miller, Andrea L Graham, Steven Riley, Paul C Cross, Michael D Samuel, Mevin B Hooten, Jennifer A Hoeting, James O Lloyd-Smith, Colleen T Webb, Michael G Buhnerkempe
Our ability to infer unobservable disease-dynamic processes such as force of infection (infection hazard for susceptible hosts) has transformed our understanding of disease transmission mechanisms and capacity to predict disease dynamics. Conventional methods for inferring FOI estimate a time-averaged value and are based on population-level processes. Because many pathogens exhibit epidemic cycling and FOI is the result of processes acting across the scales of individuals and populations, a flexible framework that extends to epidemic dynamics and links within-host processes to FOI is needed...
March 2017: Ecology Letters
https://www.readbyqxmd.com/read/28086860/nicotiana-attenuata-data-hub-nadh-an-integrative-platform-for-exploring-genomic-transcriptomic-and-metabolomic-data-in-wild-tobacco
#12
Thomas Brockmöller, Zhihao Ling, Dapeng Li, Emmanuel Gaquerel, Ian T Baldwin, Shuqing Xu
BACKGROUND: Nicotiana attenuata (coyote tobacco) is an ecological model for studying plant-environment interactions and plant gene function under real-world conditions. During the last decade, large amounts of genomic, transcriptomic and metabolomic data have been generated with this plant which has provided new insights into how native plants interact with herbivores, pollinators and microbes. However, an integrative and open access platform that allows for the efficient mining of these -omics data remained unavailable until now...
January 13, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28064464/ungulate-predation-and-ecological-roles-of-wolves-and-coyotes-in-eastern-north-america
#13
John F Benson, Karen M Loveless, Linda Y Rutledge, Brent R Patterson
Understanding the ecological roles of species that influence ecosystem processes is a central goal of ecology and conservation biology. Eastern coyotes (Canis latrans) have ascended to the role of apex predator across much of eastern North America since the extirpation of wolves (Canis spp.) and there has been considerable confusion regarding their ability to prey on ungulates and their ecological niche relative to wolves. Eastern wolves (C. lycaon) are thought to have been the historical top predator in eastern deciduous forests and have previously been characterized as deer specialists that are inefficient predators of moose because of their smaller size relative to gray wolves (C...
April 2017: Ecological Applications: a Publication of the Ecological Society of America
https://www.readbyqxmd.com/read/28060928/synanthropic-mammals-as-potential-hosts-of-tick-borne-pathogens-in-panama
#14
Sergio E Bermúdez, Nicole Gottdenker, Aparna Krishnvajhala, Amy Fox, Hannah K Wilder, Kadir González, Diorene Smith, Marielena López, Milixa Perea, Chystrie Rigg, Santiago Montilla, José E Calzada, Azael Saldaña, Carlos M Caballero, Job E Lopez
Synanthropic wild mammals can be important hosts for many vector-borne zoonotic pathogens. The aim of this study was determine the exposure of synanthropic mammals to two types of tick-borne pathogens in Panama, spotted fever group Rickettsia (SFGR) and Borrelia relapsing fever (RF) spirochetes. One hundred and thirty-one wild mammals were evaluated, including two gray foxes, two crab-eating foxes (from zoos), four coyotes, 62 opossum and 63 spiny rats captured close to rural towns. To evaluate exposure to SFGR, serum samples from the animals were tested by indirect immunofluorescence assay (IFA) using Rickettsia rickettsii and Candidatus Rickettsia amblyommii antigen...
2017: PloS One
https://www.readbyqxmd.com/read/28028206/two-distinct-pools-of-b12-analogs-reveal-community-interdependencies-in-the-ocean
#15
Katherine R Heal, Wei Qin, Francois Ribalet, Anthony D Bertagnolli, Willow Coyote-Maestas, Laura R Hmelo, James W Moffett, Allan H Devol, E Virginia Armbrust, David A Stahl, Anitra E Ingalls
Organisms within all domains of life require the cofactor cobalamin (vitamin B12), which is produced only by a subset of bacteria and archaea. On the basis of genomic analyses, cobalamin biosynthesis in marine systems has been inferred in three main groups: select heterotrophic Proteobacteria, chemoautotrophic Thaumarchaeota, and photoautotrophic Cyanobacteria. Culture work demonstrates that many Cyanobacteria do not synthesize cobalamin but rather produce pseudocobalamin, challenging the connection between the occurrence of cobalamin biosynthesis genes and production of the compound in marine ecosystems...
January 10, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28002495/space-use-and-habitat-selection-by-resident-and-transient-red-wolves-canis-rufus
#16
Joseph W Hinton, Christine Proctor, Marcella J Kelly, Frank T van Manen, Michael R Vaughan, Michael J Chamberlain
Recovery of large carnivores remains a challenge because complex spatial dynamics that facilitate population persistence are poorly understood. In particular, recovery of the critically endangered red wolf (Canis rufus) has been challenging because of its vulnerability to extinction via human-caused mortality and hybridization with coyotes (Canis latrans). Therefore, understanding red wolf space use and habitat selection is important to assist recovery because key aspects of wolf ecology such as interspecific competition, foraging, and habitat selection are well-known to influence population dynamics and persistence...
2016: PloS One
https://www.readbyqxmd.com/read/27930713/detecting-methemoglobinemia-in-animals-with-a-drop-of-blood
#17
Toni G Patton, Stephen L Blamer, Katherine E Horak
A major concern during pesticide development and use is the impact on non-target species, such as raptors or domestic cats and dogs. Sodium nitrite and para-aminopropiophenone (PAPP) are two toxicants currently being studied for the control of invasive species, such as starlings and feral swine. When given to an animal these compounds oxidize hemoglobin, which renders it unable to carry oxygen resulting in methemoglobinemia. This study developed a method to estimate methemoglobin levels in mammals and birds by examining the efficacy of sodium nitrite to induce the conversion of hemoglobin to methemoglobin...
2016: PloS One
https://www.readbyqxmd.com/read/27884437/evaluation-by-latent-class-analysis-of-a-magnetic-capture-based-dna-extraction-followed-by-real-time-qpcr-as-a-new-diagnostic-method-for-detection-of-echinococcus-multilocularis-in-definitive-hosts
#18
Miriam Maas, Annika van Roon, Cecile Dam-Deisz, Marieke Opsteegh, Alessandro Massolo, Gunita Deksne, Peter Teunis, Joke van der Giessen
A new method, based on a magnetic capture based DNA extraction followed by qPCR, was developed for the detection of the zoonotic parasite Echinococcus multilocularis in definitive hosts. Latent class analysis was used to compare this new method with the currently used phenol-chloroform DNA extraction followed by single tube nested PCR. In total, 60 red foxes and coyotes from three different locations were tested with both molecular methods and the sedimentation and counting technique (SCT) or intestinal scraping technique (IST)...
October 30, 2016: Veterinary Parasitology
https://www.readbyqxmd.com/read/27878540/some-years-you-live-like-a-coyote-gendered-practices-of-cultural-resilience-in-working-rangeland-landscapes
#19
Hailey Wilmer, María E Fernández-Giménez
Rangeland researchers are increasingly interested in understanding working rangelands as integrated social-ecological systems and in investigating the contexts of human decision-making processes that support system resilience. U.S. public lands ranchers are key partners in rangeland conservation, but the role of women in building system resilience has not yet been explored. We conducted life-history interviews with 19 ranching women in the Southwestern United States. We analyzed the resulting transcripts by identifying contradictions between women's material practices and traditional discourses in the ranching livelihood that illustrated women's efforts to maintain both a way of life and a living during social and ecological change...
December 2016: Ambio
https://www.readbyqxmd.com/read/27832063/one-health-interactions-of-chagas-disease-vectors-canid-hosts-and-human-residents-along-the-texas-mexico-border
#20
Melissa N Garcia, Sarah O'Day, Susan Fisher-Hoch, Rodion Gorchakov, Ramiro Patino, Teresa P Feria Arroyo, Susan T Laing, Job E Lopez, Alexandra Ingber, Kathryn M Jones, Kristy O Murray
BACKGROUND: Chagas disease (Trypanosoma cruzi infection) is the leading cause of non-ischemic dilated cardiomyopathy in Latin America. Texas, particularly the southern region, has compounding factors that could contribute to T. cruzi transmission; however, epidemiologic studies are lacking. The aim of this study was to ascertain the prevalence of T. cruzi in three different mammalian species (coyotes, stray domestic dogs, and humans) and vectors (Triatoma species) to understand the burden of Chagas disease among sylvatic, peridomestic, and domestic cycles...
November 2016: PLoS Neglected Tropical Diseases
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